However, some possibilities include:
* A band of roadrunners: This is a common collective noun for birds, and it works well with the roadrunner's image of being a group of fast-moving creatures.
* A gang of roadrunners: This option emphasizes the roadrunner's slightly mischievous nature and tendency to travel in small groups.
* A race of roadrunners: This emphasizes the roadrunner's speed and athleticism.
Ultimately, the best collective noun for roadrunners is the one that best suits your context and the image you want to evoke.